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15.13 Port B
15.13.1 Block Diagram
Fig. 15-13-1 shows a block diagram for port B.
Internal data bus
A15 to A8
output enable
signal
A15 (n=7)
to A8 (n=0)
or
ADM15 (n=7)
to ADM8 (n=0)
PBOUT
PBnO
PBDIR
PBnD
M
P
X
PBMD
PBM
PBPU
PBIN
PBnI
Fig. 15-13-1 Port B Block Diagram (PB7 to PB0)
M
P
X
P...
Represents one bit of each register.
I/O Ports
PBn
(n=7,6,5,4,3,2,1,0)
15-57
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